[imp] Javascript problem after server upgrade

[Bruno Costacurta]

>> I upgrade my server Linux Debian from Squeeze to Wheezy.
>
>> Since this upgrade IMP indicates a missing Javascript problem.
>> I tried this under both Firefox and Chrome browsers. Same problem.
>> However Javascript is enabled in both browsers.
>> And indeed IMP was working fine before this Debian upgrade.
>>
>> My Horde installation is (few days before Debian upgrade) updated  
>> to the latest version available.
>>
>> Thanks for any clue or help.
>>
>> Bye,
>> Bruno

> You probably have stale browser cache or server cache in horde/static/

No, no files in any of the directories horde/static (except the  
useless README file).
There is maybe a static content or other, but where ?

Bruno